JPH0311209Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a manual eyelet tightening device for attaching a one-piece eyelet to fabric.

BACKGROUND ART A manual crimping device for attaching a one-point eyelet, whose one end is curved radially outward in advance, to a fabric is known by engaging the one end of the eyelet with the lower end of a punch. It is known that after the eyelet is set on the punch, the eyelet is crimped and fixed to the fabric using the punch and die.

The other end of the eyelet, which is crimped by the device, is curved and curled radially outward along the annular groove formed on the upper surface of the die, after penetrating the fabric by the downward movement of the punch. I'm starting to do that.

Problems to be Solved by the Invention However, in the above device, the piece of fabric that is cut out when the eyelet pierces as described above remains in the hollow shaft of the eyelet, resulting in poor breathability etc. of the eyelet. There is a problem with it being damaged.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a manual eyelet crimping device in which the piece of fabric cut by the eyelet does not remain in the eyelet.

Means for Solving the Problems In order to solve the above-mentioned problems, the eyelet manual tightening device according to the present invention includes a punch provided with a pusher member protruding downward from the center of the lower end, and a punch provided below the pusher member. and a die having an upper opening hole at a location corresponding to the end portion, and the lower end portion of the pusher member can substantially pass through the upper opening hole when the punch is lowered.

Embodiments Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

As shown in FIG. 1, the manual eyelet crimping device according to the present invention is for crimping and fixing a single-point eyelet E, one end of which is curved radially outward, to a fabric F. , consisting of a punch 2 and a die 6.

The punch 2 has a lower end 3 adapted to engage with the one end of the eyelet E to set it. The punch 2 is provided with a lower opening hole 2b shaped to form a stepped portion 2a, and the hole 2b accommodates a pusher member 4 having a flange portion 4a at the upper end so as to be slidable in the vertical direction. There is.

The pusher member 4 is constantly biased by a compression spring 5 so that its lower end protrudes downward from the center of the lower end 3 of the punch 2. It is restricted by engaging with the stepped portion 2a. The tip of the other end of the eyelet E set in the punch 2 as described above is positioned approximately on the same plane as the lower end of the pusher member 4 in the protruding state as described above.

The die 6 has an upper opening hole 7 at a location corresponding to the lower end of the pusher member 4, and the hole 7 is such that when the punch 2 is lowered, the lower end of the pusher member 4 is approximately It has a size that allows it to penetrate. Note that it is preferable that the lower end of the pusher member 4 be tapered downward as shown in the illustrated example in that the width of the upper opening 7 can be made smaller.

Further, the die 6 has a space 8 which is larger than the upper opening hole 7 and communicates with the hole 7.

Note that reference numeral 10 is an annular groove formed on the upper surface of the die 6 around the upper opening hole 7, and for curving and curling the other end of the eyelet E outward in the radial direction.

Effect Next, the operation of the device according to the present invention will be explained.

First, the eyelet E is set on the lower end 3 of the punch 2, and the fabric F is set on the die 6. Next, when the punch 2 is manually lowered, the other end of the eyelet E pierces the fabric F, and the lower end of the pusher member 4 comes into contact with the fabric F, thereby causing the pusher member 4 rises within the lower opening hole 2b of the punch 2 against the biasing force of the compression spring 5. When the punch 2 further descends, the other end of the eyelet E, after passing through the fabric F, curves and curls outward in the radial direction by the annular groove 10 formed in the die 6, as described above. do.

In this way, at the same time that the other end of the eyelet E penetrates through the fabric F, the pusher member 4 is lowered by the biasing force of the compression spring 5. As a result, the fabric F cut out by the eyelet E and anchored to the hollow shaft of the eyelet E is pushed out from the hollow shaft through the pusher member 4, and then
It is guided into the space 8 via the upper opening 7.

As a modification of the present invention, as shown in FIG. You can.

Effects of the Invention As described above, the eyelet manual tightening device according to the present invention includes a punch provided with a pusher member protruding downward from the center of the lower end, and a punch provided upwardly at a location corresponding to the lower end of the pusher member. and a die having an opening hole, and the pusher member can substantially pass through the upper opening hole when the punch is lowered.

With this configuration, pieces of fabric that are generated when the eyelet passes through the fabric when the punch descends,
The effect is that it is reliably pushed out of the hollow shaft portion of the eyelet through the pusher member and does not remain within the eyelet.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the essential parts of the manual eyelet tightening device according to the present invention, FIG. FIG. 7 is a sectional view showing a die according to a modified example of the invention. 2: punch, 3: lower end, 4: pusher member, 6: die, 7: upper opening hole.

Claims (1)

[Scope of utility model registration request] The pusher member 4 consists of a punch 2 provided so as to protrude downward from the center of the lower end 3, and a die 6 having an upper opening hole 7 at a location corresponding to the lower end of the pusher member 4. A manual tightening device for eyelets, characterized in that the lower end of the member 4 can substantially pass through the upper opening hole 7 when the punch 2 is lowered.